JPWO2008032593A1 - Wrinkle pattern for wrinkle pattern printing, method and program for generating wrinkle pattern, housing building material printed with wrinkle pattern, automobile interior parts, home appliances and information equipment - Google Patents

Abstract

The purpose is to create a wrinkle by building software in a computer and use it as an alternative to a conventional wrinkle. A wrinkle pattern for printing a wrinkle pattern, which is created by a computer and includes a basic structure in which the basic structure generated by a geometric fractal is repeated and the repetition mode is changed in the repetition. .

Description

  The present invention relates to a wrinkle pattern for wrinkle pattern printing, a wrinkle pattern creation method and program, and a home building product, an automobile interior part, a home appliance, and an information device printed with the wrinkle pattern. It is about.

  Wooden products have been mainly used for building interior materials such as walls, ceilings and floors, and furniture covering materials such as shelves and doors. However, with the advancement of printing technology, photographs of wood grain are photographed for actual wood, image processing is performed and printed on paper, film, etc., and this is laminated on plywood to give a sense of quality, luxury, and preciousness. It is used as a building material (building material) based on the impression of using actual wood.

  At present, design has been positively introduced into image processing to enhance satisfaction and satisfaction in the comfort of living, and added value has been added by adding advanced, complex, and decorative features in printing technology. Printing is in progress. In English, this field of printing is called decoration printing, and the market is expanding worldwide. Recently, by printing on a water-soluble film and immersing it in water, only the pattern film is floated on the water, and plastic parts etc. are pressed against the floating pattern film from above in the air. The area of use is expanding to interior materials for industrial products such as automobile interior parts by means of a water transfer method for attaching a pattern to the surface. In addition, the development of household appliances, consumer products such as information devices, and industrial materials is also in the horizon.

  On the other hand, abundant use of wood from the environmental point of view is no longer permitted, and the use of printing technology for building materials is also being developed from this point of view. From this point of view, not only interior materials but also exterior materials are being tried for replacement, and technical importance is increasing. In these cases, it goes without saying that reasonableness is required for the price as compared with conventional materials. In addition, it is not just a substitute, it is also possible to add features by design design to the wood grain, etc. of distinctive wood from around the world, to provide decoration and meet the demands of aesthetic sense of comfort and comfort . In addition, it can be applied to a wide variety of natural and artificial patterns such as leather, stone, fabric, metal, and geometric abstract patterns. The process of making these other interior materials by applying the printing technique is represented by a flowchart as shown in FIG. Step S1 shows these objects.

  Currently, offset printing, which is lithographic printing, is remarkable for beautiful color printing. In offset printing, plate production is easy and inexpensive, plate replacement work, color matching, etc. are becoming more automated, and workability improvement is remarkable. The price of the printing press is also lower than that of gravure printing press. In addition, it is easy to handle printing of small lots, and there has been a situation where the spread has been spurred. However, the printing of residential building materials is based on a different method, gravure printing and intaglio printing. In this method, plate production requires a work process associated with the plate type, the printing machine is also expensive, manual work is also required for plate replacement, color development and adjustment requires technology, and as a result, small lot production Are disadvantageous compared to the features of offset printing.

  However, offset printing uses four colors of yellow, red, indigo, and black, while printing of building materials, transfer foils, etc., mixes the four colors of ink or has a different color tone. The intaglio, which is a characteristic of gravure printing, creates a cell on the plate surface by chemical and mechanical methods, and transfers the ink stored in the plate to the target surface. It is a method that can be printed with a feeling of ink volume, and that this method is suitable in combination with the properties of the target paper, film, etc., to plywood surface, metal surface, plastic surface Gravure printing is an indispensable method because this method is also suitable in terms of the properties of subsequent processes, as seen in the example of pasting, embossing and overlaying on the printing surface described later ( Non-patent document 1).

[Get image data]
The traditional method has been to take photographs of wood grain and other objects that are excellent in decorativeness and suitable for building materials, and fix them on film and use them as data for printing. In that environment, the data was analog. Recently, the use of digital cameras has become normal, and images are acquired as digital data. In addition, it is possible to shoot a long object by a scanner equipped with a digital camera. Also in this case, the image is acquired as digital data. The obtained analog and digital data are the original data of the pattern to be printed, step S2 in FIG. These have been performed by the operation of block 1.

  In traditional camera photography, the cameraman did this using the technique. At present, data acquisition by an easy-to-operate scanner is becoming mainstream.In that case, when scanning and imaging, the direction of daylighting is changed, and the appearance of annual ring muscles, conduits, etc. are changed slightly, Each data is assumed to be printed. For this reason, based on the acquired data, a computer graphics (CG) processing person who examines repeatability, color tone, pattern continuity, etc. as a pattern within a predetermined area when a printed pattern is used, The person in charge of finishing and retouching to improve the quality by the pattern color tone, the texture of the wood, etc. functions. Currently, the same person is in charge of the work as a creator, and the actual situation is that the creator also performs the data acquisition work.

[Wrinkles]
Here, the texture will be described. Wrinkles are written as 皺, and Kojien says that “the unevenness that appears on the surface of the fabric due to the way the yarn is twisted, and the wrinkles that are processed into leather or paper”. In the current printing, all the irregularities seen in leather, wood grain, fabric, metal surface, geometric pattern and line, satin pattern, etc. are called wrinkles. When the pattern is imaged in the above flow, the wrinkles are simultaneously acquired as an image in the pattern original data. FIG. 2 shows examples of various kinds of wrinkles (issued by Tanasawa Hakkou Co., Ltd., 1-10). As a printed product, by treating the embossing, even if there is no actual unevenness, it is possible to give the impression of unevenness to the printing and make it feel “feeling to touch”. As a result, it is possible to increase the added value by giving a high-grade decoration feeling and a high degree of design to normal printing.

  On the other hand, in terms of emphasizing the impression of unevenness, the surface corresponding to the embossed part is treated separately, the mold is created, the surface of the printed matter bonded to the plywood by resin processing, or the surface of the printed matter printed on a plastic material such as vinyl chloride An uneven shape (emboss) is added to the mold to increase the added value of the product. In natural materials, grain is integrated with a pattern such as wood grain. However, the original building material products started with a pattern printed and not particularly made use of wrinkles. Even if it is possible to attach embossing, it is not always required to apply a concavo-convex shape that matches the printed pattern, and embossing that appears to match the printed pattern has been accepted.

  However, products that have embossed irregularities in synchronization with basic patterns such as wood grain have been presented. Such embossing is called synchronized embossing. In this method, it is necessary to perform printing and embossing according to the pattern, and it is high in the complexity when designing the pattern as a printed product, printing to achieve synchronized embossing, high level of finishing technology, etc. Technical ability is required. In addition, a mold created based on leather texture and created on the surface of a resin material is used for interior parts such as dashboards and seats as interior decoration materials (exterior) for automobiles. In addition, the use of such a texture is expected for the exterior of home appliances and information equipment.

[Process of creating pattern in printing]
In step S3 in FIG. 1, in addition to the creator, a designer who examines the design of the pattern pattern is added. From the original data acquired in step S2, whether or not repeatability of a part suitable for printing is possible, the degree of emphasis on the grain, Sample data to be presented to the customer is created by using the screen of the computer output display device with respect to the texture such as shading, arrangement, etc. and its modification, color addition and determination, and fashionability of the pattern design. In this process, in step S4, the ink jet printer outputs the paper, and in step S5, the suitability of the finish is confirmed. In step S6, the output of the ink jet printer and the color of the four-step baby, which is a post process, Check based on the correlation with the printing of this machine. Although it is desirable that the number of repetitions by the block 2 is small, the current flow is assumed.

  As for printed patterns, ink that is matched to this machine's printing as much as possible with a small rotary printing press called Yotsuba Baby is printed according to the number of colors used on this machine's stand, and this will be approved by the customer. . Depending on the request of the customer designer in charge of the actual interior, the verification is repeated before printing in this step S8 according to the flow of block 3.

There is a case where a pattern corresponding to a texture is still included in the above flow. However, when the embossed type production in step S9 of the post-process is considered, since the process is produced by an external company, a separate process is required and close cooperation with related companies is required. In particular, in the case of tuned embossing, it is deformed by the properties of paper and other materials to be printed, the properties of ink, the tension during printing, etc., and as a result, the pattern of the printed product is deformed from what was created on the plate It may also occur. Therefore, in order to emboss in synchronism with this, it is necessary to change the pattern in consideration of this deformation in advance in mold production, and this requires high technicality.
1999, published by Nikkan Kogyo Shimbun, "Monozukuri Evolution" Volume 1, pages 84-87, "Color Printing"

  As described above, conventionally, wrinkles have been obtained from actual natural materials or artificial materials by realistic collection, and used for printing and decoration. In the course of the past, it was not that there were no wrinkles that were made depending on the skill of the technician. However, even in this case, it can be said that it was generally acquired by the above-described process.

  On the other hand, attempts have been made to create patterns and patterns with a high degree of design with the aid of computers as the performance of computers has improved and the demand for use technology has increased. The present invention is intended to create a texture by building software in a computer and to use it as an alternative to a conventional texture.

  The grain pattern for grain pattern printing according to the present invention that has advantageously solved the above problems is created by a computer. The basic structure generated by the geometric fractal is repeated, and the mode of repetition is changed during the repetition. It is characterized by including a basic structure.

  Note that the basic structure may be a branch structure, and the change of the repetitive form may be single replacement, reverse single replacement, or double replacement combining them. Moreover, the dead end branch wire of the branch structure may be removed to create a corrugated shape.

  Further, 1 / f fluctuation may be given to the lattice point positions connecting the basic structures, and 1 / f fluctuation may be given to at least one of the strand length and strand inclination angle of the basic structure. May be.

  Furthermore, it may have a thickness and a depth based on the number of times of superposition of the basic structure.

  In addition, the method for creating a texture pattern for printing a texture pattern according to the present invention repeats the basic structure generation step of generating a basic structure by a geometric fractal and the generated basic structure when generating the texture pattern by a computer. And a basic structure repeating step of including a basic structure in which the repetition mode is changed in the repetition.

  In the embossing pattern creation method for embossing pattern printing according to the present invention, the basic structure may be a branch structure, and the repetition mode may be changed by single replacement, reverse single replacement, or double replacement combining them. It is also good. Alternatively, the dead ends of the branch structure may be removed to create a wavy shape.

  Further, the 1 / f fluctuation property may be given to the lattice point position connecting the basic structure, and the 1 / f fluctuation property is given to at least one of the strand length and strand inclination angle of the basic structure. Also good.

  Further, the thickness and depth may be given based on the number of times the basic structure is overlaid.

  Further, a plurality of basic structures may be generated and presented in the basic structure generation process, and a basic structure selected from those basic structures may be used. A plurality of types of structures may be generated and presented, and a basic structure selected from basic structures in which the repetition mode is changed may be used.

  Further, a power spectrum picture obtained by performing two-dimensional Fourier transform on the grain pattern created by the creation method may be presented, and the created grain pattern may be output based on the evaluation result of the power spectrum picture. The information entropy obtained from the texture pattern created by the creation method may be presented, and the created texture pattern may be output based on the evaluation result of the information entropy.

  Further, the grain pattern creation program for grain pattern printing of the present invention is a program for creating a grain pattern on a computer, and a basic structure generation step for generating a basic structure by a geometric fractal, and the generated basic pattern It is characterized by comprising a basic structure repeating step of repeating a structure and including a basic structure in which the repetition mode is changed in the repetition.

  In the grain pattern creation program for grain pattern printing according to the present invention, a step of presenting a plurality of types of basic structures generated in the basic structure generation step and a basic structure selected from these basic structures are input. And a step of presenting a plurality of types of basic structures generated by the above basic structure repeating step, the basic structure of which the repeating mode is changed, and the basic structure of which the repeating mode is changed. And a step of inputting the selected basic structure.

  Furthermore, in the embossing pattern creation program for embossing pattern printing according to the present invention, a step of obtaining a power spectrum picture by performing two-dimensional Fourier transform on the embossing pattern created by the creating method, and presenting the obtained power spectrum picture are presented. And a step of inputting an evaluation result of the power spectrum picture, and the generated wrinkle pattern may be output based on the evaluation result, and the wrinkle created by the creation method may be output. A step of obtaining information entropy from the pattern, a step of presenting the obtained information entropy, and a step of inputting the evaluation result of the information entropy, and outputting the created wrinkle pattern based on the evaluation result It is also possible to make it.

  The residential building material product, the automobile interior part, the home appliance, and the information device of the present invention are characterized in that the wrinkle pattern is printed.

  When the computer creates a texture based on the present invention, the process of step S1 and step S2 related to block 1 in FIG. 1 can be made into the process incorporated in the process of step S3 and step S4 related to block 2. . As a result, it is possible to construct a system that can respond to the market trend in which demand for shortening delivery time is increasing. As a company, this is also a way to gain a competitive advantage. In addition, handling in steps S3 and S4 means that designers are involved in the creation of creators in addition to creators, and it is possible to create a variety of textures with completely new design sensations while basing on natural materials. It will be put in view. This is expected to lead to new customer demand as a building material using printing technology.

  And when the computer creates a texture based on this invention, the computer generates a plurality of basic structures and presents them on the screen display etc., and the creator and designer select the preferred basic structure from them in an interactive format The computer is instructed (input) and the computer uses the selected basic structure, or the computer generates a plurality of types of basic structures whose repetition modes are changed in the basic structure repeating process, and displays them on the screen. Presented and interactively selected by the creators and designers, selecting a preferred basic structure with a changed repetition mode and instructing (inputting) the computer, and the computer uses the selected basic structure with the changed repetition mode. So that creators and designers are easier and more active It can be involved in the creation of grain to.

  Furthermore, when a computer creates a wrinkle according to the present invention, a complex plane Fourier coefficient spectrum obtained by two-dimensional Fourier transform of the wrinkle pattern created by the creation method is presented on a screen display or the like, and interactive In the form, the creator and designer evaluated the Fourier coefficient spectrum based on the characteristic pattern from which a generally preferred texture pattern is expected, and instructed (input) the computer, and the computer was determined to be preferable based on the evaluation result. If the generated wrinkle pattern is output, the computer can selectively output a wrinkle pattern that is considered preferable for humans.

  Further, as a method for generating a wrinkle using a geometric fractal, it is also possible to give information on the wrinkle thickness and wrinkle depth corresponding to the wrinkle depth, that is, three-dimensional information, based on the number of repetitions of the basic structure. Until now, since unevenness is generated on the printing surface by embossing, the embossing of the embossed pattern in the subsequent process has been mainly performed by a photoetching technique based on embossed data. However, by adding shape data such as thickness and depth to the wrinkle data from the beginning, the data can be used immediately as machining information. As a result, the input information for creating the female mold and the male mold can be transferred to the NC machine tool and processed, thereby contributing to the shortening of the mold production period. Incidentally, in recent years, machine tools have been remarkably improved in machining performance, including an improvement in spindle speed, and in combination with improved tool performance, this has become easy to realize. Photoetching has been performed using a mask to determine whether or not to etch, but recently, a method of performing laser scanning irradiation is also possible, and its application is considered.

It is a flowchart which shows the flow of the conventional pattern printing. It is explanatory drawing which shows the example of a wrinkle. It is explanatory drawing which shows the fractal structure example of the natural world. It is explanatory drawing which shows the example of an algebraic fractal. It is explanatory drawing which shows the example (Koch curve) of a geometric fractal. It is explanatory drawing which shows the generator of a Koch curve, and fractal creation. It is explanatory drawing which shows the example of a branch structure generator. It is explanatory drawing which shows the replacement growth of a branch structure generator. It is explanatory drawing which shows the change of the generator of branch wire removal. It is explanatory drawing which shows the example of replacement by a change generator. It is a flowchart which shows the flow of a wrinkle element creation. It is explanatory drawing of the length and inclination | tilt angle of a strand. It is a flowchart which shows the flow of a lattice point structure and the provision of fluctuation property. It is explanatory drawing which shows the example of the arrangement | positioning rule of a lattice point, and a connection rule. It is explanatory drawing which shows the example of the leather grain. It is a relationship diagram which shows the characteristic of fluctuation by a power spectrum density function. It is explanatory drawing which shows the fluctuation characteristic (composite tree) of a grain. It is explanatory drawing which shows the fluctuation characteristic (redwood) of a grain. It is explanatory drawing which shows the concept of provision of "1 / f fluctuation" to the 1st lattice point. It is explanatory drawing which shows the concept of provision of "1 / f fluctuation" to a 2nd lattice point. It is a flowchart which shows the flow of fluctuation characteristic provision. It is explanatory drawing which shows the example of the wrinkle pattern which arranged the wrinkle element continuously. It is explanatory drawing which shows the said wrinkle pattern pattern when a fluctuation | variation is provided to the 1st lattice point. It is explanatory drawing which shows the said embossed pattern at the time of introduce | transducing a 2nd lattice point. It is explanatory drawing which shows the said wrinkle pattern pattern when a fluctuation is also introduced into the generator. FIG. 6 is a relationship diagram illustrating a verification result of “1 / f fluctuation characteristics”. It is a flowchart which shows the flow of a wrinkle pattern creation. It is explanatory drawing which shows the production | generation method of the film corresponding to photoetching. It is a flowchart which shows the flow of a wrinkle element creation. It is a flowchart which shows the other flow of fluctuation | variation provision to a generator. It is explanatory drawing which shows the concept of a line segment rectangle model. It is explanatory drawing which shows the smoothing method by a connection part deformation | transformation line segment. It is explanatory drawing which shows the smoothing method by line segment movement. It is a flowchart which shows the program based on the interactive structure method of a wrinkle design. It is a perspective view of the surface pattern with the characteristic which changes to 2 directions. It is explanatory drawing which shows the contour line of the said surface pattern. It is explanatory drawing which shows the characteristic line abstracted from the contour line of the said surface pattern. It is a perspective view which shows the area | region of a two-dimensional Fourier coefficient. It is a perspective view which shows the presence area and surface pattern of a two-dimensional Fourier coefficient. It is a perspective view which shows the Fourier spectrum with respect to the surface pattern of FIG. It is a perspective view which shows the Fourier coefficient spectrum with respect to the surface pattern of FIG. It is a perspective view which shows the Fourier spectrum of FIG. 35 calculated | required from FIG. It is a flowchart of the characteristic evaluation method of a creation pattern. It is a flow diagram of a practical embossing by two-dimensional Fourier analysis, a creation tip by pattern feature extraction and variable adjustment, and a pattern acceptance / rejection judgment process. It is explanatory drawing which compares and shows a wrinkle image and its two-dimensional Fourier-analysis result. It is explanatory drawing which compares and shows a wrinkle image and its two-dimensional Fourier-analysis result. It is explanatory drawing which compares and shows a wrinkle image and its two-dimensional Fourier-analysis result. It is a flowchart of evaluation use of principal component analysis and information entropy calculation.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiment is realized by a program installed in advance in a normal computer or a program supplied from an external storage medium in the computer. FIG. 3 is an example of a fractal structure observed naturally. In fractals, it grows as a structure, and a stochastic phenomenon is involved in the growth process, generating a similar shape, and is classified as a probabilistic fractal (published by Asakura Shoten 1990, Tamas Vicheck, See “Fractal Growth Phenomenon”). FIG. 4 is an example classified into an algebraic fractal (see Morikita Publishing Co., Ltd., 1993, Hiroshi Serizawa, “Fractal Travel”).

Algebraic fractals are generated on the complex plane. Complex number sequence {Zn} is expressed by the following equation (1)
[Equation 1]
Z _n = X _n + Y _n · I (X _n and Y _n are real numbers, i is a complex unit) (1)

Z _n is represented by a point P _n (X _n , Y _n ). At this time, {Z _n } generates a sequence of points P _n on the (X, Y) plane. The recurrence formula of the complex number sequence is the following formula (2)
[Equation 2]
Z _n = f (Z _n−1 ) (n = 1, 2, 3,...) (2)
And P _n (Z _n ) is determined from P _n−1 (Z _n−1 ), and thereafter, it becomes possible to obtain Z _n for all n sequentially and recursively.

When n → ∞, the movement of the point sequence is
1. Converge to 1 point.
2. Oscillates periodically between a finite number of points.
3. Move within an area.
4). Diverge.
The following four behaviors are shown. The behavior is determined by the form of the recursion formula (2) and the initial value Z ₀ .

Figure 4 shows the recurrence formula as the following formula (3)
[Equation 3]
Z _n = Z _(n−1) ² + Z _c (3)

The relationship shown in the figure is shown by using equation (3), with all points in the defined region as initial values, points that diverge as black, and points that do not diverge as white.

  The algebraic fractal and the stochastic fractal described above are typical for seeing what a fractal is. However, assuming the case of leather as a typical example of wrinkles, it is difficult to tie them together. Moreover, when these are seen from the viewpoint of the design, the fractal shape cannot be known from the relational expression shown in FIG.

  Considering the above process, in the present invention, as a fractal, it is easy to confirm the self-similarity that is a feature of the fractal, and a geometrical fractal using a line segment, which is simple as a figure, is suitable for creating a wrinkle. Judging and using this. FIG. 5 is an example of a geometric fractal called a Koch curve. The geometric fractal generation method defines, as a basic structure, a geometric shape consisting only of line segments called generators, and a similar shape between all the line segments (elementary wires) that make up the generator. The replacement operation is repeated several times. FIG. 6 shows the process of creating a Koch curve. Here, N indicates the number of replacements.

[Branch structure fractal]
In one embodiment of the present invention, a wrinkle creation system using a fractal having a branch structure as one of geometric fractals is configured. This assumes a leather texture structure as a typical texture structure. However, the configuration method based on the present invention can be variously developed using a generator.

  In the case of algebraic fractals and stochastic fractals, it is almost impossible to infer the relationship between the initial basic equation and the pattern corresponding to the pattern created from now. On the other hand, geometric fractals can interact with the computer to change the generator in any way. In addition, it is possible to see the wrinkle shape based on this on the screen as well, and while the designer grasps the relationship between them, the operation is repeated and the designability, naturalness, diversity, etc. of the wrinkle are confirmed. It becomes possible to create by judging. At this time, it is also possible to design the embossing characteristics while considering the relationship with the printed pattern, and to design the embossing uniquely and with a higher design.

  FIG. 7 and FIG. 8 show examples of branch structure generators, and divisions when they are replaced and grown. The generator must be able to draw a stroke with a fractal branch structure. In the generator of FIG. 7, as a result of branching, one-stroke writing cannot be performed at the branch portion, and reciprocation as indicated by arrows. FIG. 8 shows a case where, with respect to this portion, one of the forward path and the return path is ignored and replaced with only one, and then each strand is replaced. FIG. 8B is a double replacement in which the branching portion is replaced in a reciprocating manner. FIG. 8C shows a single replacement in which only the forward direction of the branching portion is replaced. FIG. 8D shows a case of reverse single replacement in which only the return path of the branching portion is replaced.

  In the branch structure, the amount of branching increases depending on the number of substitutions and the number of times, and the complexity increases. FIG. 9 and FIG. 10 present an example of a method for performing replacement at a certain replacement stage of the original generator using a generator without a branch element wire as a generator in order to control complexity and branching amount separately. . FIG. 9 shows an example in which the branch wire is removed by a branch structure generator to obtain a new generator having a wave shape. FIG. 10 shows the first stage of the original branch structure, which is replaced with a modified generator and introduces undulations into the strands to add complexity. From the next stage onward, we have succeeded in creating a branch structure that takes complexity into consideration, using the structure with undulations as a generator, replacing the next and subsequent stages. When this is a branch structure filled between lattice points, which will be described later, it is called a texture element. FIG. 11 shows a flow of generating the embossed element including the subsequent procedure, and the above-described procedure is represented by steps S11 to S19.

  The generators of FIGS. 7 and 9 can be created by operating a mouse by using a GUI (Graphical User Interface) on the screen of a computer display device. Depending on the characteristics of the geometric fractal, this operability makes it easy to grasp the relationship between the generator and the embossed element, and enables creation of a design with good operability. In step S19 in FIG. 11, the generator start point, end point, and strand configuration and the start point, end point, etc. are defined on the coordinates, and the length and inclination angle of the strand are given to quantify the texture element. . As a result, elements are embedded between lattice points, which will be described later, so that the entire texture can be formed.

FIG. 12 is a diagram showing the relationship between the length and the inclination angle when the wire coordinates are obtained. When the starting point and the ending point of a strand are given as A (a ₁ , a ₂ ), B (b ₁ , b ₂ ), the strand length λ and its inclination angle φ are expressed by the following equations (4), (Five)
[Equation 4]
λ = √ (a ₁ −b ₁ ) ² + (a ₂ −b ₂ ) ² (4)
φ = arctan {(a ₂ −b ₂ ) / (a ₁ −b ₁ )} (5)

Is required. This is a characteristic that can be used for the start point and end point of the element as well as the characteristic of the element wire. Considering that the embedding of embossed elements is considered in two directions, forward and reverse, the inclination angle when A → B is φ around A, whereas the inclination angle when B → A is B Φ- (π / 2) at the center.

[Lattice points for the whole grain structure]
In order to develop a wrinkle element into a pattern, it is fundamental to set lattice points and embed a wrinkle element between them to form a surface. As the arrangement of the grid point setting, a rectangle, a brickwork, a rhombus, or the like is considered. FIG. 13 shows the flow of this related operation including the process until the 1 / f fluctuation characteristic is added. First, an example of these grid point arrangements is shown in FIG. The figure (a) is a rectangle, the figure (b) is a brickwork, and the figure (c) is a rhombus. The initial setting of the grid points is regular as shown in FIG. Therefore, a texture formed by embedding a texture element in between is inevitable to be regular as a pattern.

  FIG. 15 is an example of a leather texture. As seen in this example, the ridge pattern is not an orderly regular pattern. However, each has its own characteristics. In the embodiment of the present invention, “1 / f fluctuation” property is considered as a property that gives such characteristics. Then, the fluctuation is given to the position of the grid point, the length of the segment of the generator element wire, and the inclination angle as the fluctuation width so as to give a sense of complexity to the design pattern and approximate to the actual texture pattern. As seen in the examples shown in FIGS. 15 (a) and 15 (b), the leather wrinkles have a seemingly irregular shape, but the directionality indicated by the arrows that anyone can see in them is is there. It is the long side of the rectangle that gives direction to the creation wrinkles, and the branch structure is the pattern that characterizes this as a result.

[Characteristics of 1 / f fluctuation]
It is common for various phenomena in the natural world to show irregularity in the basic periodicity. Here, f is the frequency or the reciprocal of the period. If the unit is time and length, the frequency is the frequency for the former, and the number of repetitions for a predetermined length for the latter. As a technique for analyzing characteristics of natural phenomena with respect to frequencies, there is a Fourier analysis, and it is a general technique to grasp characteristics for obtaining a power spectrum density function over the target frequency region for the energy density for each frequency.

  When a current is passed through the electric conductor, a noise current whose waveform of the resistance output fluctuates irregularly is observed. In this case, a Fourier analysis method is applied to the change in voltage value, a power spectral density function is obtained, and the logarithmic axis represents frequency on the horizontal axis, and the power spectral density function represents the vertical axis on the logarithmic axis. It is said that the characteristic showing the tendency of f was obtained (see Toshimitsu Takeshi, Kazuo Kitahara, “1 / f Fluctuation Physics”, Applied Physics, Vol.58, No.12, 1989, pp. 1688-1695) . FIG. 16 conceptually shows the relationship between the power spectral density function and “1 / f fluctuation” in this case. Features are divided by the power index of f.

The characteristic of f ⁻¹ , that is, 1 / f is a characteristic having a gradient of −45 ° on the logarithmic coordinate axis. On the other hand, when the exponent is 0, -2, the former has a uniform characteristic with respect to the frequency, and the latter has the 1 / f ² characteristic shown in FIG. The former is a case referred to as white noise (white noise) and has a strong irregularity. On the other hand, the latter shows a phenomenon that the spectral density is further suppressed at a high frequency and is difficult to see as a feature.

  The observed data of the object to be analyzed is the change in heart rate over time if it is a heart rate described later with respect to the time axis or length, and the change in shade corresponding to the length if it is wood grain. (See Kodansha's 1987 issue, Toshimitsu Takeshi, "The World of Fluctuation", Utilization of Fluctuation, Techniques for Reproducing Ceramic Cracks). If this is seen as a waveform, it can be seen as an irregular vibration phenomenon. As long as the waveform is observed, in the irregular vibration phenomenon, the amplitude changes, and it is generally difficult to specify this, and it is also difficult to read the frequency. The origin of the definition of “fluctuation” is unclear in relation to the fact that 1 / f is called, but the amplitude is not fixed and the frequency is not good for the fact that irregular vibration has the above characteristics. We express the characteristic that it is not constant as "fluctuation".

  The characteristics of 1 / f fluctuation are observed in the above-described noise voltage, heart rate, wood ring, and the like. Further, it is suggested that this characteristic may give a sense of nature, a sense of comfort, and a feeling of comfort, and it is also mentioned that it leads to a sense of beauty through these. Among them, the possibility of simulating and reproducing the cracks of ceramics, which is a traditional craft, by introducing fluctuations in the basic pattern is presented. CG ", Information Processing Society of Japan Research Report, 2000-35, 2000, pages 25-28).

  Here, FIG. 17 and FIG. 18 show examples of characteristics in the case of wood grain. FIG. 17 shows the power spectrum for the enlarged image of the camphor tree grain and the intensity of the cross section in the lateral direction. FIG. 18 shows the same characteristics for the grain of redwood native to the United States. In either case, a “1 / f fluctuation” characteristic is shown with respect to a noticeable frequency, in this case, a period. The existence of the 1 / f characteristic is shown as the possibility of being able to point out this property over all types of wood.

[Generation of “1 / f fluctuation” characteristics]
“1 / f fluctuation” is introduced with the intention of imparting a sense of nature and diversity to the pattern while disturbing regularity and imparting complexity. This “fluctuation” is given by giving a fluctuation width defining “fluctuation” to a lattice point, introducing a second lattice point in addition to the first lattice point introduced initially, Introducing “fluctuation”, cutting the grain element between the first grid point and the second grid point, but making it intermittent as a whole, so that the whole grain is given a variety and complexity. In order to further increase the complexity, the generator wire length and the inclination angle are given by giving the same characteristic fluctuation width.

FIG. 19 is a conceptual diagram for giving “1 / f fluctuation” to a lattice point. Lattice points are assumed to embed a wrinkle element between them to create a wrinkle pattern as a whole. The fluctuation amount with respect to the lattice point is given by the fluctuation width with respect to the coordinate values of x and y. FIG. 20 is a conceptual diagram when the second grid point is set and the touch width is given. Assuming that the minimum value of the swing width is fmin, the maximum value is fmax, and the number of divisions for determining the step of the swing is N, the swing width value is expressed by the following formula (6) for a natural number i where 0 ≦ i ≦ N.
[Equation 5]
fi = fmin + {(fmax−fmin) / N} (6)
Given in. Since the 1 / f characteristic is considered as the relationship between this value and the frequency of occurrence, the following equation (7)
[Equation 6]
log ₁₀ y = −log ₁₀ fi (7)

That is, the following equation (8)
[Equation 7]
y = 1 / fi (8)

Is shown by the relationship.

The total frequency S is
[Equation 8]
S = Σ (1 / fi) (9)

And the occurrence probability pi for i = n is
[Equation 9]
pi = fn / S (10)

Is required.

  After determining the lattice point, if fmin = 0, the deflection width from the original position is given by equation (6). Here, the amount given to fmax when fmin = 0 is required to be searched in the process of practical use, but it is required to find an appropriate length within a range smaller than the length between lattice points. FIG. 21 shows the flow of this process. The fluctuation is given by a characteristic that a large fluctuation width has a low occurrence frequency and a small fluctuation width has a high occurrence frequency.

[Lattice points with 1 / f fluctuation characteristics, placement on generator wires]
The total number of grid points is M, and these are numbered. On the other hand, M pieces of fi based on the process up to equation (10) are obtained by equation (6), and i is assigned to these. Here, first, a lattice point that can give a fluctuation width is determined by a random number. With respect to the (x, y) coordinates of the lattice points, the x coordinate is first targeted, and then the y coordinate is targeted, but by setting the random number for each to be independent, (x, y) It is possible to target all the grid points independently of each other by giving a runout width. After this, fi is similarly selected by a random number, and this is arranged at the already selected grid point. As a result, fluctuations are given to the lattice points as shown in FIG.

  As a result of giving fluctuations to the lattice points as described above, a texture pattern is created by embedding the texture elements between the lattice points with a direction. However, depending on the shape of the embossed element, there has been a case where the pattern has a pattern that gives an impression that the directionality remains strong. In order to improve this, as shown in FIG. 20, a new grid point is defined at the same position as the above-mentioned grid point, and the above-mentioned fluctuation fluctuation width is given to this to generate a grid point. Here, the initial lattice point is referred to as a first lattice point, and the newly generated lattice point is referred to as a second lattice point. Thus, two lattice point groups having different fluctuation amounts are prepared.

  In the first grid point group and the second grid point group, the points assigned the same number are adjacent to each other. The embossed element is embedded by using either the first or second point at the left starting point and the first lattice point group at the right point. The selection of the left starting point in the grid point group depends on the probability value. It is also possible to select the probability value as constant. However, it is also possible to vary the probability value depending on the grid point numbering. In the above, the selection is made at the start point on the left side. However, on the left side, the first grid point group is always set as the start point, and the first grid point group and the second grid point group are selected on the right side with the same probability. Is possible. This makes it possible to create an intermittent portion of the wrinkle element in the pattern, and to add diversity and complexity from the viewpoint of bringing it closer to nature.

  In order to add natural feeling and diversity to the pattern, in addition to the grid points, the line length and inclination angle can be given a fluctuation width of “1 / f fluctuation” to the strand of the grain generator. I have to. The fluctuation width can be given a fluctuation fluctuation width in the same manner as the lattice points by assigning numbers to the strands. Further, it is possible to continue the subsequent operation by limiting the type of generator depending on how the fluctuation width is given. It is also possible to create such that a different generator can be assigned to each lattice point.

  The choice of whether to assign all fluctuations to the second grid point and generator strand or whether to provide options in it is also related to the possibility of combination with the methods up to that point. By increasing the parameters to be applied, it is possible to bring closer to the natural feeling of the pattern based on complexity, diversity, etc., and the flow shown in FIG. By using the lattice points and the embossed elements created in this way and embedding the latter between the lattice points, the entire pattern of the embossed texture can be created.

  22, 23, 24, and 25 respectively show a wrinkle pattern when the wrinkle elements are continuously arranged, the fluctuation is given to the lattice points, the second lattice points are introduced, and the fluctuation is also introduced into the generator. It is a thing. Which of these is to be selected depends on the specifications of the required building materials, etc., customer preferences, the sensibility of creators and designers, and the like.

  Actually, as shown in the respective flowcharts so far, in the intermediate stage including the generator creation stage, it is necessary to go back to the initial stage and make corrections, and from the final result, Necessary corrections and improvements can be made based on previous work experience to achieve a desired texture pattern.

[Relation formula for embedding embossed elements]
Fluctuation fluctuation width is given to the lattice points, and the lattice points have moved from their original positions. Therefore, it extends and rotates from the original interstitial length. The length and the amount of rotation in the meantime can be obtained by equations (4) and (5). In order to embed the grain element in the meantime, it is necessary to be able to enlarge, reduce, and rotate between the start point and the end point. The relational expression is the same as the expression (4), (5), but
[Equation 10]
l _i = √ (x _i −x _i−1 ) ² + (y _i −y _i−1 ) ² ... (11)
ψ _i = arctan {(y _i −y _i−1 ) / (x _i −x _i−1 )} (12)
It is expressed. Here, (x ₀ , y ₀ ), (x ₁ , y ₁ ), ... (x _n , y _n ) etc. are the coordinates of the start point and end point of each strand, and (x ₀ , y ₀ ), (x _n , y _n ) are the coordinates of the start point and end point of the element. Further, i is the i-th strand of the generator, l is the length of the strand, ψ is the amount of change in angle, and d is the direction at the time of replacement. Using these, the wire parameters can be expressed as (l _i , ψ _i , d _i ). Here, d can be defined as (0: A → B, 1: B → A).

(In the following relational expression, n is replaced with i)
It is possible to configure the emboss element by giving the start point and end point as (1, 0), that is, the length as 1. In that case, the characteristic of each strand is given by the following equation (13)
Can be expressed as Here, {L ′ _i } is a parameter relating to the strand after the movement, rotation, enlargement, and reduction processing. Here, I _i and I ′ _i are position vectors of the start point and end point of the strand. At this time, the rate of enlargement / extension is given in consideration of the fact that λ is obtained by Equation (4), while the initial length is 1.

When embedding, the position after enlargement / reduction in the direction of A → B is
And can. Next, it rotates by φ. Multiplying each moved λL _n by a rotation matrix,

Finally, translate the origin position to point A,
Is obtained.

In the case of B → A, in the same way, for enlargement / reduction and rotation,
It becomes. Finally, move this so that point B is at the center,
And given.

[Overlay of wrinkles]
When the actual example of the leather texture shown in FIG. 15 is observed, there is a possibility of being simulated by the branch structure element, while it is also a pattern that appears that the texture of the point group is superimposed. This is considered to be a form in which another wrinkle pattern composed of point clouds overlaps the pattern pattern by the branch structure. It is an issue to consider what kind of textures can be realized by overlapping, but by considering the generator structure, applying some or all of the method of the present invention, a new texture pattern It is thought that it is possible to create a wrinkle pattern with a branch structure wrinkle pattern, and it can be expected to create a wrinkle pattern with more natural feeling.

[Development of embossed pattern processing]
Create a mold with uneven shape according to the texture pattern, and apply uneven shape to the material such as resin coated or overlaid on the printed product as a non-synchronized, synchronized pattern corresponding to the printed product. Increasing the added value of stamping, building materials and other printed products has been increasing, and in recent years its demand has been increasing.

  The created wrinkle pattern can be associated with depth information with respect to the thickness of the wire, and can be made into three-dimensional information as a pattern. It is also possible to add color information. In the branch structure, the line width is thick in the trunk structure, and it is possible to deepen the information in the direction perpendicular to the screen. This can be developed as film information in mold production through a photoetching method that has been widely used in the past. Recently, a method using laser scanning irradiation has also become possible. On the other hand, this three-dimensional information can be converted into tool drive information of a machine tool and directly connected to mold production. As a result, it is possible to shorten the delivery time of a wrinkle pattern mold production and a wrinkle pattern molded product using the wrinkle pattern mold. When using the 3D information of the wrinkle as information to the machine tool, it is sent to the machine tool as CAM (Computer Aided Manufacturing) information that drives the tool to create the mold shape on the work material, for the production of female and male dies Can be connected. In the photoetching process, it is necessary to use a female mold once to create a male mold for overlaying with a printed product. However, it is also possible to create a male type directly in production by a machine tool.

  In FIG. 26, in order to verify the function of the module that generates “1 / f fluctuation”, a value taken in steps of 0.1 between 0.1 and 10 is obtained as “fluctuation random number”, and 5,000. The frequency for each output is obtained three times to confirm the 1 / f characteristic. From the characteristics obtained by the method of least squares, a result satisfying the approximate characteristics is demanded.

  FIG. 27 also shows a process of combining the surface three-dimensional shape creation by mold processing and the product printed with the design pattern in the overall flow. Synthesizing a grain pattern and a printed pattern as a basis of the pattern to make a product by overlapping them is actually performed in a wood grain pattern or the like. However, there are no examples of embossing patterns created in computers, and in combination with the creation of embossed patterns, we produce products that add value to their unprecedented design and design. I have the potential to do it.

[Overall flow]
FIG. 27 shows the overall flow of the above-described system for creating a texture pattern, while showing the positions of the functions shown in the middle of the process. Software provided to the computer is used to improve the operability by configuring modules with various functions such as generator and element setting, grid point setting, fluctuation generation and assignment, and wrinkle pattern creation. In addition, the output of the mold production can be converted into the next process input via the interface based on the created data.

  In order to make the wrinkle with a natural view, the wrinkle pattern grown from the generator is thinner at the end branch and shallower as the three-dimensional shape, and the portion corresponding to the trunk is thicker and deeper as the three-dimensional shape. The shape may be generated.

  In FIGS. 9 and 10, the creation of a generator and a replacement based on the generator, the creation of a generator having a wave shape with branches, and the provision of diversity by the replacement using the generator have been described. FIG. 10 shows the creation of an element that has been expanded from the trunk to the twigs, with replacement from N ′ = 1 to N ′ = 3. Now, if the pattern pattern of N ′ = 2 and the pattern pattern of N ′ = 3 are overlapped with the pattern pattern of N ′ = 1, the number of times that the trunk, the branch, and the twig are sequentially overlapped decreases. This is because the number of overlaps can be increased as the part where N ′ is small, that is, the part replaced at an earlier stage, and the thickness can be changed according to this number. The thickness may be displayed in proportion to the number of overlapping times, or may be displayed by changing the ratio according to the number of times.

  The wrinkle pattern is typically generated in leather, and has a three-dimensional structure in which a concave portion is formed in the pattern. The created wrinkle pattern is also considered to be used for making a fake leather based on the mold. At that time, the following method using a film can be cited as a method for producing a mold by a photoetching method. That is, as shown in FIG. 28, the texture created as a pattern is sequentially output to the film for each of the primary processing to the tertiary processing, and used as a photoetching original plate.

  In this example, a texture having a branch portion is created by three replacements from the generator with the branch portion removed. The primary-processed film corresponds to the third replacement, and has the least overlap, so that the texture pattern is composed of the thinnest elements. The number of replacements and the order of processing are reversed, but in the etching process, the order of the etching process starts with the thinnest wrinkle pattern configuration, so the order of replacement is reversed. ing. As the secondary processing and tertiary processing are performed, a thick line segment corresponding to the order is drawn. Since the pattern pattern itself has a configuration in which the pattern patterns are overlaid according to the order, the texture is expressed as a whole as a result of the overlapping.

  FIG. 29 shows a flow of creating a wrinkle element in which the thickness changes, and here, the rate of increase in thickness due to superposition by setting the number of replacements is set to α. It is also possible to give naturalness and diversity to α by giving fluctuations according to the coordinates.

  Furthermore, element generation may be performed in the flow shown in FIG. 30 instead of or in addition to the flow of element generation shown in the right end of FIG.

  In the above-described embodiment, the elements constituting the fractal, such as generators and elements, are expressed as line segments. However, in the present invention, the line width is increased and the thickness changes at a point corresponding to the middle of the line segment. In order to add an element, as shown in FIG. 31, for example, a line segment constituting a branch structure may be defined as a rectangular region, and a control point may be provided at an appropriate point of the line segment forming the outline of the rectangular region. The control point functions as a change point of the waved bent shape, a length by applying 1 / f fluctuation, and / or a change point of the width so as to give diversity and a natural feeling. As a result, it is possible to greatly increase the range of change in the variety of line widths and the natural feeling. The change in the height direction is basically based on an arc shape corresponding to the width, and a change in shape is introduced by placing control points on the arc shape.

  When the line segment is defined as shown in FIG. 31, a sudden change in the thickness of the line segment occurs at the connecting portion. For this reason, it is necessary to take measures for smooth connection. As one measure, as shown in FIG. 32, in consideration of a line segment represented by a trapezoid having an adjacent control point as an end, straddling adjacent rectangular connecting portions having different thicknesses, at least the end and Assuming a control point at the longitudinal intermediate portion corresponding to the original connecting portion, and functioning as a changing point of the wavy bent shape, a length by applying 1 / f fluctuation, and / or a changing point of the width, as described above To give diversity and a natural feeling (smoothing method using the deformed line segment of the connecting portion).

  As another measure for constructing the connecting portion, the initial line segment is shifted in the right direction where the thickness is changed as shown in FIG. In order to connect smoothly at the end, the control point is moved to the width of the side connected at the end, and fluctuations are introduced in the same manner as described above to give diversity and change. Thereafter, the above shift is performed. Thereby, in this example, it is possible to connect to the left end of the line segment with a narrowed width on the right side. Thereafter, it can be developed in the same manner as the method shown in FIGS. 31 and 32 (connection smoothing method by line segment movement).

  In FIG. 31, FIG. 32, and FIG. 33, the line segments are straight lines. If fluctuations are given to these line segments, bending can be caused.

FIG. 34 is a flowchart of a program that enables creation of the above-mentioned wrinkle design in an interactive manner with a computer. The features of this program are as follows.
A. Interactive type Generator construction based on mouse and panel description should be interactive type, and then element construction and grain creation based on the requested contents.
B. Various grain structures A. It is possible to create various wrinkles on the screen by the operation starting from.

  In this system, “generator shape definition”, “number of replacements”, “grid point arrangement rule”, “texture element arrangement rule to lattice point”, “fluctuation function parameter”, “ By changing interactive parameters on the computer, etc., you can display the wrinkle shape generated with each parameter change in real time and confirm the shape with designers, creators, etc. It is characterized by the ability to repeat and create a progressive design.

  “Definition of generator shape”, “Number of replacements”, “Rule arrangement rules”, “Wrinkle element arrangement rules to grid points”, “Fluctuation function parameters”, “Displacement countermeasure parameters for continuous patterns” It can be freely set according to the will of designers and creators, and interactive design can be built on a computer system.

  The generator shape can be set to a single configuration or multiple configurations, and a regular impression (unnaturalness) seen by the human eye can be prevented by performing a continuous processing of the wrinkle shape, a more natural design Can be constructed.

・ In the generation of wrinkle shapes, by combining “fractal” and “1 / f fluctuation” that exist in nature, it is possible to acquire a variety of wrinkle shapes and control the impression of those shapes. It is possible to build from geometric design to natural design.

[System Overview]
(Basic method of grain design)
・ Generates wrinkle elements based on geometric fractal generation methods.
-Creates a wrinkle shape by combining wrinkle elements.
・ "1 / f fluctuation" is given to the combination arrangement position of the embossed elements to give a natural impression.
・ The impression can be controlled quantitatively by designating numerically the degree of “1 / f fluctuation”.

Hereinafter, a description will be given based on FIG. However, the circled numbers in the figure are parenthesized numbers in the specification due to restrictions on character input.
[Cross shape generation method]
(1) Setting of drawing size Input size in X and Y directions → Element setting area is determined using the Texture Size panel.
(2) Formation of geometric fractals
2-1. Generators (geometric shapes composed of line segments) are freely defined, and each line segment constituting the generator is replaced with the shape of the generator itself to form a geometric fractal as shown in FIG.
2-2. The number N of replacements by the generator itself is used as a parameter for controlling the “complexity” of the embossed shape. (Similar at N = 1, the shape increases in complexity as the N number increases.)

(3) Generation of wrinkle shape (introduction of fractal graphic wrinkle element)
3.1. By allowing the generator shape and the number of replacements to be freely changed on the screen, the designer / creator can determine the final shape of the shape in real time on the screen.
3 ・ 2. A basic element figure can be obtained under the branch structure in real time by freely moving the fold points connecting the line segments of the branch structure with a mouse drag.
(4) Arrangement rules for embossed elements
4 ・ 1. In order to generate the “direction” recognized in the artificial leather pattern, the lattice elements are placed in the Lattice panel Lattice MODE using the Lattice panel, and the grid points in the example of FIG. 14 (Line, Brick, Diamond), Box, Line-Phase, Zigzag Select from 6 types of shapes with seeds and arrange them continuously and intermittently to make the basic shape of the wrinkles (the same wrinkle elements are first formed at equal intervals). Further, the number of elements arranged is determined by the Lattice panel volume-X / Y, and the number of grid points is set in the X and Y directions.
4.2. By checking the Fix Mode panel as needed, the grid points can be arbitrarily changed using the mouse drag at the designer's or creator's will.
4 ・ 3. By creating and introducing multiple generators on the screen, you can change the description of elements between grid points.

(5) Element layout direction
5.1. Determine in Element panel
Same Vector: Arranges fractal shapes in the same direction.
Alternate Vector: An arrangement direction is alternately reversed with respect to a direction in which elements are continuously arranged.
Random Vector: The computer automatically determines the orientation of the element with a random probability.
5-2. By checking the Fix MODE panel appropriately, you can change the orientation of the element with a mouse click. “Rule point placement rules” and “rules for embedding embossed elements between lattice points” can be set freely with the mouse pointer (free movement of the lattice points), and various interactively depending on the designer's will The basic shape can be generated.
(6) Display the texture in the drawing area with the DRAW Sibo button
Press the DRAW Sibo button to display the texture in the drawing area ((1) element setting area). By changing various parameters at the discretion of the designer and creator, the texture in the drawing area is reflected in real time, so it is possible to freely reflect while checking the screen with multiple people such as designers and creators. is there.

(7) 1 / f fluctuation is applied. • For the regular impression wrinkle basic shape formed in (6), the property of “1 / f fluctuation” is automatically applied to all line segments in the drawing area. To give a natural impression.
-Parameter assignment: Check “NOISE Check”. → "X direction (X Way), Y direction (Y Way), width direction of line segment" Width (Line) "" with reference to the visualized grids displayed in the drawing area (element setting area) Determine the parameters with.
・ The parameters of “1 / f fluctuation” are the X and y coordinate positions (movement of the x and y coordinate positions of both end points of the line segment), the width of the line segment (the amount of change in the width) ), The depth of the line segment → the amount of change in depth, and determined by the following equations (16) and (17).

By changing the value of parameter ε arbitrarily around 1, it is possible to control the impression of the embossed shape (when parameter ε = 1, the degree of fluctuation is “1 / f”, and when ε> 1, the impression is monotonous (If it is 1>ε> 0, it becomes a grain shape that gives a strong impression.)
・ Check the x and y coordinate positions of both end points of the wrinkle element component line → “FIELD Noise On”.
・ Check line width → “Field Noise On” and “MODE Line to Box”, then check “FIELD Width Noise On”.

(8) Creation of various continuous wrinkle shapes When generating wrinkle shapes over a wide area, a method of constructing the whole wrinkle shape by continuously arranging the wrinkle shapes formed in (6) or (7) It was adopted.
8.1. Using the introduction of the concept of continuation processing / grid points in basic shape construction, it is possible to place new texture elements for continuous continuation outside the area of the basic shape where the lattice points follow the same rule, The generated shape is set as a unit shape in the continuous pattern. This makes it difficult to recognize the impression of repetition of the same pattern and regularity, and a more natural texture shape and a target that can be used practically can be selected.
Method of operation:
-Connect the wrinkle shape vertically, horizontally, and in a wide range → Check “Seamless” in the Render Texture panel.
・ Translate the connection positions of the left and right connections by the number of vertical grid points → Input numerical values to Slip.
8.2. In order to prevent the discontinuity of the connection part that occurs when "1 / f fluctuation" is simply given to each unit shape, the equation (16) is applied between the connected unit shape boundaries. In order to make the amount of change determined by the same value, the condition (16) becomes a periodic function in which the horizontal width and the vertical width of the unit shape are each set in the x direction and the y direction, respectively. .
8-3. Advanced continuation processing ・ In order to prevent a regular impression (unnaturalness) seen by the human eye against repeated shapes of the same pattern in the horizontal direction, the unit shape vertex positions do not match vertically or horizontally It was also possible to create a continuous pattern in which some shapes were translated and connected.
-By performing this process, unnaturalness does not occur even if a free grid point array and a plurality of generators are used.

In the present invention, the texture pattern created as follows is further evaluated.
1. Selection of design for design of patterns The computer-generated texture method allows creation of design patterns that can be said to be infinite, with the addition of stochastic characteristics to variable elements. The stochastic characteristic introduces 1 / f fluctuation, which is found in the results of phenomena analysis in nature, and it can be shown that the characteristic is included in the creation result. However, as to whether or not these patterns can be put to practical use, the current handling assumes dependence on experience and feeling in printing or product designer's pattern development.
On the other hand, with the use of wrinkles so far, there is a fact that patterns in the natural world are basically used as they are. At this time, the selection of a specific pattern is basically accepted as “beauty” by designers and related persons. However, the logical reason for how “beauty” is evaluated is still unclear.

2. Application of two-dimensional Fourier transform In the following, a method based on two-dimensional Fourier transform is presented as the evaluation method described above. The above-mentioned 1 / f fluctuation characteristics are obtained by, for example, obtaining the density of the grain in the direction orthogonal to the direction in which the grain flows, and Fourier transforming a series of data to obtain the power spectrum for the grain pattern used as an alternative building material. The results were based on having that property. A similar evaluation was made for the generated wrinkles having 1 / f fluctuation characteristics.
Until now, the evaluation method related to the characteristics of the natural world or the confirmation of the characteristics of the created results has been based on the evaluation on one-way line where the characteristics can be found as described above. In the current computer environment, where the power spectrum is obtained by Fourier transform with improvement, the result of the method that can grasp the features of the pattern pattern including irregularities such as grain, wrinkles and so on is sufficient as the result. It depends on what happened. However, whether it is grained or grained, the characteristic pattern develops in a flat shape, and evaluating the characteristics of the pattern as a plane selects perhaps a sensuous “beauty” as “beauty” It is possible to introduce a method to give generality to evaluations related to design and design.

3. Application example of two-dimensional Fourier transform compared with pattern pattern Fig. 35 is an example of a two-dimensionally developed surface pattern that is not a grain or grain, but a two-dimensional Fourier analysis method. To understand the above evaluation method. The surface of FIG. 35 has irregularities and has a three-dimensional shape. If a contour line is drawn for this shape, the display of FIG. 36 is possible. In FIG. 35, the height representing the shape of the surface is expressed as a function value with respect to the two-dimensional position. However, in the case of a pattern such as a grain or a grain, it is possible to use a display based on shading instead of the height and shape.
FIG. 37 abstracts the characteristic lines that can be read in FIG. This feature line has periodicity and is different from the texture and grain pattern with irregularity symbolized by 1 / f fluctuation, but for using the 2D Fourier analysis method for evaluation. Take for example.
As can be seen from the analysis of 1 / f fluctuations, Fourier analysis itself is particularly common for one-dimensional characteristics grasping and is used in many fields. However, there are no examples that can be said to be developed in two dimensions and used for grasping the characteristics of the object. For one thing, there are few cases where the features can be grasped by looking at the one-dimensional characteristics in the respective axial directions in many cases as seen in the feature lines in FIG. It seems to be because it is not.

4. Description of the relational expression of the two-dimensional Fourier transform However, when a pattern such as a texture pattern is created in a computer, it is used as a characteristic when it is used in practice. It is possible to use the Fourier coefficient spectrum and Fourier (power) spectrum as an index to evaluate the difference from the existing characteristics, the common characteristics of objects that are put to practical use, the characteristics that the created pattern should have, etc. . The Fourier transform F (u, v) of the function f (x, y) of two variables x and y is

And this inverse transform is

It is indicated. Here, j is a complex unit. If the real and imaginary parts of F (u, v) are R (u, v) and I (u, v), the energy (power) spectrum P (u, v) and the Fourier spectrum Q (u, v) are Respectively

It is expressed.

  The Fourier coefficient after the above expression (1) is executed is represented by a region shown in FIG. 38 having a real part and an imaginary part for the two variables u and v. Here, N is the number of data for one variable, and means the wave number in the section from which the data is acquired. If the feature line shown in FIG. 37 is targeted, the wave number component included is analyzed and displayed.

5. Example of application of relational expression If the power spectrum is used according to the above equation (3), it will not be handled as a complex unit, so the phase relation of component existence will not be visible. However, when this is handled in the form of a visible form, it is shown that even if the wavenumber components are the same, they are described as completely different shapes. That is, if there are components from A to E in FIG. 38, components from B to E excluding A are shown in the same expression in the power spectrum as shown in FIG. However, when the inverse transformation is performed from the notation of FIG. 4, a completely different shape is obtained as shown in FIG. In other words, for the shape shown in FIG. 39, the power spectrum is evaluated as FIG. 40, which is one index, but in FIG. 38, the characteristics of FIG. 39 are stored and shown. .
When two-dimensional analysis is applied to grain, grain, etc., there are many points that cannot be clarified about the contents revealed by the analysis shown in FIG. Therefore, it has potential for application as a method.

41 shows the Fourier coefficient spectrum obtained for the surface pattern of FIG. 35, and FIG. 42 shows the Fourier power spectrum obtained based on this. 41 corresponds to FIG. 38 and can be displayed including phase characteristics. However, FIG. 42 corresponds to FIG. 40 and has a characteristic indicating only the location of the frequency component.
While applying this method to wrinkles that have already been put into practical use and grasping the characteristics of the wrinkles that are applied to the wrinkles created in the computer, they can be put to practical use. Is a means of selection.

  FIG. 43 shows a flow diagram of the process of extracting features of a practical pattern using two-dimensional Fourier transform and the same analysis result of a created pattern, and using the latter for evaluation and selection. FIG. 44 is a flowchart showing a practical embossing obtained by two-dimensional Fourier analysis, a creation embossing by pattern feature extraction and variable adjustment, and a pattern acceptance / rejection judgment process.

In the following examples of the present invention, analysis was performed on practical sample patterns for wood grain, geometric pattern, hairline, leather texture, cloth, stone, satin, etc. These patterns are specimens including colors. However, at this stage, the color is not evaluated, and the pattern is expressed by a single color gradation and analyzed. A method for evaluating colors in combination with patterns is a future issue.
In addition, an embossed pattern is added on the pattern, and the design is enhanced in cooperation with the pattern. That is, only the pattern is analyzed without considering the relationship between color, embossing and pattern.
In the following analysis, a power spectrum picture (PSP) is used instead of the Fourier coefficient spectrum. This is a distribution of power spectrum as luminance (intensity) in two-dimensional frequency parameters and shows three-dimensional information as a single image, which has the disadvantage that it is easy to use for evaluation but cannot be inversely transformed.
As a result of the analysis, in the process of adopting the practical specimen, the pattern that was not adopted is unknown and there is no analysis, and there is no comparison between them. In that respect, it is difficult to say that the characteristics of the two-dimensional Fourier coefficient spectrum obtained as a practical specimen pattern are accurately grasped. However, at least it is possible to show the characteristics of the practical specimen pattern, and it is possible to describe the features from that viewpoint.

[Evaluation by information entropy]
There is a claim that information entropy is used in addition to Fourier analysis to evaluate aesthetic expressions. Information entropy H
And the information appearance probability pi. Here, pi is the appearance probability of each color. Here, N is obtained as N = L × W, where L and W are the numbers of vertical and horizontal pixels of the image.
In the following, the image information is converted to gray scale, 0 to 255 steps, the appearance probability of each color is obtained, and 0 to 255 is divided into 10 steps, and the appearance probability is obtained, the former is subdivided, The results are obtained in Table 3 with the latter as a rough division.
In any case, the relative relationship of the obtained results is shown with the same tendency. The numerical value is large when the color changes drastically and various colors appear. When the tendency is read using a wrinkle as an example, the pattern becomes finer, the area of the cloud is larger, and the higher the luminance, the larger the value.
FIG. 48 shows that the pattern characteristics in the real space can be described by calculating the entropy from the result of the principal component analysis based on the result of the Fourier analysis, from the wrinkles, the pattern, or from the Fourier coefficient spectrum. FIG. At present, the verification of the pattern used for practical use is not sufficient, and the characteristics as a result of the analysis do not indicate a combined usage in which the feasibility of practical use can be determined from this characteristic. These are future challenges. For the time being, it was a method at the analysis stage, but it was presented as an index method related to sensibility, with a view to the development to the integration stage.
As described above, it is difficult to see the characteristics that can determine the quality of the texture and the pattern by using these numerical values. However, it is required to analyze the details of various design patterns that are put to practical use and to analyze the details of the relevance to the principal component analysis and to search for the possibility of evaluation.

2. Characteristic Description FIGS. 45 to 47 are PSPs for a pattern specimen on the premise of practical use. It is an analysis result of the target on the premise of practicality, and it can be seen as a dense result with practicality.
2.1 Wood grain
(a) to (h) are examples in which the wood grain runs in the vertical direction, and (j) is an example in which the grain direction is in the horizontal direction. (i) shows a variety of knot patterns at the roots, and is an example of a pattern pattern that is different from the case of other so-called wood grain.
(a) to (h) are spectra having respective characteristics with respect to how the bright line spreads and how the cloud around the bright line spreads around the bright line along the horizontal axis. Since color and embossing are not taken into consideration, the effect on the adoption of practicality remains unclear, but it can be said that the features of the wood grain pattern considering at least practicality are shown.
Currently, it is not possible to see the wood grain pattern covering all features. However, if we describe the feature summary from what we could analyze this time,
(1) When represented by monotonous bright lines along the horizontal axis (d), (f), (g)
(2) When the broad line along the horizontal axis is the basis and the spread is shown by the high frequency component (a), (c), (e), (h), (j)
(3) There are differences in shade and spread, but when the cloud spreads around the origin (b), (c), (e), (g), (j)
(4) When showing a unique spectrum with an oblique pattern in the cloud spread (i)
And can.
In the case of wood grain, the main component force direction is first the perpendicular direction of the grain flow. In the case of (i), since there is no feature indicating the flow, it is considered to change depending on the target pattern. In the case of an object, the vertical axis direction is the first result, which corresponds to the way the clouds spread.
The entropy is small when the grain is not clear, and it is large when the image is clear, the bright lines along the axis are strong, the spread, and the clouds are spread (c), (j), coarse grain (g) (I) where the nodes are emphasized and the clouds are spreading.
In the above description, in (f), (h), (i), etc., the original image is difficult to see. For this reason, the relationship with the Fourier coefficient spectrum obtained by two-dimensional Fourier transformation is put, and the result of processing the image to make the pattern pattern easier to see is shown separately. Although we have also obtained spectrum diagrams using processed image data, some of them are difficult to see as spectrum diagrams. This is considered as a means for confirming what the original image was not visible.
As a result of the above, in (i), the state that the pattern is formed from the features of the root node is well shown, and the relationship with the spectrum form is easier to understand.

2.2 Geometric pattern The patterns (k) and (l) have spectral characteristics that show the effect of overlapping periodic components. In (k), the vertical axis becomes a bright line according to the stripe pattern, while the characteristic is shown by the bright spot at the location according to the periodicity. Although it is cloud-like, the characteristic appears along the horizontal axis, but it can be seen that the vertical stripes are not visible in the original image, but some irregular stripes are present.
In (l), in addition to the feature indicated by the bright line along the vertical axis and the bright spot at the location showing periodicity, the presence of the periodic component is indicated as two bright lines in the frequency component on the vertical axis. ing.
For (m), when looking at the characteristics of the spectrum, there are three points including the point where the bright spot of the second frequency on the vertical axis is visible on the vertical axis, while the second in the horizontal axis direction is second. There are no bright spots on the horizontal axis of the frequency, and there are two spots. The original image has the same point arrangement in the horizontal direction and the vertical direction, and the latter also has the above characteristics although it seems that the three points can be seen and have a proper relationship. Looking at the point sequence of the original image, the horizontal axis with light hitting from above and having a shadow in the lower half is an asymmetric image on the horizontal axis, but there is no shadow in the left and right direction and the target image is However, it is thought that this result is produced.
The spectral characteristic for (n) is an orthogonal bright line with a spread along the coordinate axis. The original image is a patterned pattern in which square shapes are regularly arranged. However, it is understood that these are not continuous in the horizontal and vertical axis directions, and as a result, they are expressed as bright lines extending along the coordinate axis.
In the main component analysis, for (k), (l), and (m), results that match the spectral features are required. In the case of (n), it can be seen from the spectrum form that a good angle can be obtained without rotating the axis. However, a rotation of 26 degrees with respect to the first direction is required. The direction is not determined from the bright line along the axial direction, and it is presumed that this result is obtained from the slight deviation of the cloud spread near the center.
The entropy has the largest value for (k) and the other values are comparable. Although there are still some problems in how to understand it, one way of thinking seems to be the result of fine stripes and a dense pattern.

2.3 Hairline
In both (o) and (p), the line direction is the vertical direction, which is represented as a bright line along the horizontal axis. The irregularity of the line arrangement is shown as bright lines and spreads along the axis, and the irregularity of the base surface in the horizontal axis direction and the vertical axis direction is shown as the cloud spread near the origin.
The main component force analysis shows that the first direction is determined depending on the emission line depending on the flow direction, and this coincides with the base axis.
Entropy has few features that can be characterized in comparison to other patterns, and it seems to be shown as a small value.
2.4 Skin wrinkles
In (r), the dark part that divides the cloud characteristic of the flow direction is clear, and the spread of the cloud has a clear fan shape. The spectral shape of (q) shows the feature that the center of the cloud is dark and the spread appears to be circular.
The principal component analysis shows that the direction of the axis is the same as that of the original axis because the directionality is not clear for (q). It can be understood that is rotated 90 degrees.
The entropy value is smaller than the former, and the latter is shown to be comparable to the larger value for the grain. This difference is shown by the spread of the clouds.
In addition, in the result of processing the original image to make it easy to see the details of the image, in the case of (q), the spectral feature has disappeared. Although the problem of the data collection method remains, the spectrum shape shown at the beginning is used as the object of comparison, and the result is obtained for the time being.

2.5 Cloth In the case of cloth (s), the horizontal line has the same feature that the bright line appears, but in the previous case, the bright line of the fundamental frequency parallel to the vertical axis, the spread of the cloud is not the fundamental frequency of the vertical axis and the horizontal axis It is characteristic that it is remarkable in the part surrounded by squares. On the other hand, in this case, the bright line indicating the presence of the frequency component in the horizontal axis direction is markedly shown with respect to the characteristic frequency on the vertical axis. Assuming that the spectral characteristics change depending on the detailed pattern of the fabric, the characteristics that are not necessarily conspicuous in the patterned pattern are shown in a form that is easy to see in the spectrum.
In the main component analysis, the results can be predicted from the form of the spectrum. On the other hand, the entropy indicates a value that falls within the largest region in the whole. From the form of the spectrum, it can be inferred that this result is due to the fact that there are striped patterns in the vertical and horizontal directions, which is a characteristic of the texture.

2.6 Grain In Fig. 9, (a) is the concrete surface and the characteristics are required. However, the pattern seen in the original image is completely different. It is characteristic that the spectrum is shown by cloud spread. In the subject this time, it seems that the pattern of the original image has a flow in the vertical direction, which is a spread in which the cut of the cloud is generated by tilting slightly to the left in the vertical axis direction. On the other hand, as a way of spreading, the lower left corner and the upper right corner show a slightly rounded shape.
The way of spreading is not limited to the stone pattern, but can be considered to vary depending on the features of the pattern. However, in the case of stones as well as grain, pear texture, etc., it seems that characteristics are displayed as how the clouds spread, and it is thought that the accumulation of data on patterns for practical use will make the evaluation more clear in the future .
The principal component analysis is in the axial direction that can be inferred from the spread of clouds. Entropy is a numerical value that still falls within a large area. While the subject has the characteristics of fine changes, it shows that it shows a large change as a stone.

2.7 Sashiji
In the satin shown in (u) and (v), the spectrum is shown as cloud spread. In this example, it is difficult to see the original image, so it is necessary to accumulate measurement examples in the future. However, with the pattern this time, the former is a fine and difficult to express as a gray image, while the latter is an example of a large pattern. In the latter case, the spread of the cloud is the widest and uniform within the target area in the previous examples.
The result of main component analysis is a result obtained based on the relational expression, and the direction of the angle cannot be clearly determined by visual observation. The way the clouds shine is thin (u), but the dispersion value is almost the same as the density of bright spots (v), giving a viewpoint for understanding the numerical values. .
The entropy is small at (u) and large at (v). When referring to the original image, the former is based on the fineness and high brightness, and the latter has a strong cloud bright spot in the spectrum, which is considered to lead to each result.
Note that the original image in (v) is difficult to see at the beginning, and it can be seen more clearly in an image that has been processed with light and shade to make it easy to see.

2.8 Others Among the two examples, (w) is a pattern with an abstract decorative pattern on one side, and (x) is a sludge or a Japanese paper fine lump, each of which is slender, as seen in the original image. However, the decorative body having an irregular shape in length and thickness is uniformly patterned on the entire surface, but irregularly patterned.
Each spectrum has a form spreading in a circular shape, and shows a broad central portion having a broadness. The latter is characterized by the fact that bright lines spread radially.
(y) is a pattern that can be classified as a geometric pattern similar to (m). This specimen shows a cylindrical image in a slightly thick transparent resin, and this cylindrical image changes in various ways depending on the viewing angle. However, it shows the characteristics that can function as a screen. It is a specimen because it has a distinctive appearance. However, as an image, the entire characteristics cannot be grasped, and an image to be seen as an original image is acquired and its spectrum is obtained within the operating range of the scanner.
The original image of (w) has a clear decorative pattern when an image made easy to see by processing the shading is referred to. The spectrum for this image also shows features that were not visible in the original transformation. Although the cloud spread is uniform, the results of the analysis show a 21 degree rotation on the first axis. As the variance value, the value of the largest region is shown for (y).
Entropy shows moderate values in (w) and (x), and shows the maximum value in (y).

3. Summary The main pattern analysis and the pattern pattern information entropy were calculated for two-dimensional Fourier transform, PSP, and the Fourier coefficient spectrum indicated by the transformation for typical pattern patterns for practical specimen patterns. As a result, although various characteristics as sufficient conditions for a practical design pattern have not been clarified, it was possible to clarify some of the characteristics that are necessary conditions for a practical design pattern. These summaries are shown as follows.
(1) The spectrum shows bright lines in the direction of the horizontal axis perpendicular to the flow of the grain, and shows how the grain spreads according to the features on both sides of the bright line depending on the direction of orientation and direction. Among the wood grain patterns, patterns that have root nodes as the theme show the spread of clouds according to their characteristics.
In the case of normal wood grain, the main component force direction is indicated by a simple characteristic in which the direction perpendicular to the wood grain flow is the first direction.
The main component dispersion value is large when the cloud is widened, and is the largest in a normal non-wood pattern that is characterized by a root node, and then the pattern is fine, whether it is fine or coarse. Followed by a case where it appears to be floating, and a small value is shown in a color tone close to white as a pattern surface. The entropy value is also shown in the magnitude relation.

(2) The relationship shown in (1) for the intensity of the bright line, the spread and dispersion value of the cloud, and the entropy can be obtained in the same manner in relation to the spectra shown for the other pattern patterns.
The direction of the main component force is determined depending on the direction of the bright line and the direction of the cloud as well as the direction of the cloud. In many cases, the direction can be estimated by visual observation. However, it may be shown for the first time by analysis, and a result that cannot be seen in the original image is first obtained by analysis.
(3) It is possible to classify and estimate spectral patterns for characteristic patterns. However, it is not always easy to estimate a spectrum diagram from a pattern for wrinkles, satin, abstract decoration patterns, and the like.
In principle, it is possible to reversely transform the spectrum diagram to the original pattern. Based on the characteristics, a characteristic form is given to the spectrum diagram, and this is inversely transformed to create the pattern. It is also assumed. This is a technique that has never been attempted, and is a future issue.

It is related to the method of creating a printed pattern used for building materials in a computer, and the practicality of the created pattern is judged by the sensitivity of the designer in the past. In this application, the introduction of technical methods is presented for evaluation judgment.
As an example of the technical method, two-dimensional Fourier transform is used, and it is shown that it can be expressed as a characteristic of frequency space by applying it to a texture developed on a plane and other patterns. Furthermore, applying the principal component analysis method to this, eigenvalues and the corresponding axes are obtained, and it is suggested that these are associated with the directional characteristics of the pattern in the real space. Furthermore, we seek information entropy and infer some of the relevance of the features of real space patterns.

  As described above, making a texture pattern created as data in a computer as a printed product is a completely new attempt, and the creation of a design pattern that has never existed is expected. While neighboring countries are focusing on production technology, the creation of intellectual assets is required. Attempts by organizations with experience in practical technology to increase to practical technology in cooperation with each other based on inventions created by research organizations are also suitable in a timely manner from the social circumstances surrounding Japan.

  It should be noted that the above-mentioned practical specimen patterns are actual samples provided by various companies, and thank the companies providing these actual samples.

The embodiments of the present invention are summarized as follows.
(1) Replace the wrinkle data based on natural materials and artificial materials in the printing process with wrinkles created by computer aids based on creation logic to make housing building materials products. As a result, it is possible to create a completely new wrinkle while shortening the in-process delivery time.
(2) A wrinkle is created using a branch structure which is a kind of geometric fractal. The generator is created interactively on the computer screen, and the replacement of the branch is repeated based on this generator, and the element that is to be developed on the surface is configured. Whether or not the generator has appropriateness as a final pattern is determined by creating the final pattern by operating the following items, and the designer who is the operator considers customer demand.
(3) When replacing the branch structure, create a wave-type other generator equivalent structure that removes the branch with the original generator, replace it, and replace the generator with the wave shape introduced into the strand as the basic structure of the generator. Can be created. This makes it possible to give the original complexity and naturalness of the grain.
(4) Although the branch structure is used in the above-described embodiment, the present invention may be developed to various structures.
(5) Set grid points to embed elements between them. The lattice points are basically arranged in a rectangular shape, but can be expanded into a brickwork type, a diamond shape, or the like. It cannot be denied that the whole pattern pattern in which elements are embedded in lattice points arranged in a rectangle has a strong regularity. On the other hand, a fluctuation width having “1 / f fluctuation” observed in a natural phenomenon is given to the lattice point, and a new lattice point is set by moving from the original position of the lattice point. Embed elements to create an overall wrinkle pattern.
(6) A method for providing “1 / f fluctuation” property is presented.
(7) In addition to the fluctuation to the initial grid point, in order to further add diversity, complexity, and naturalness, a second grid point is set and the same fluctuation is given to this. In the meantime, intermittent patterns are created to create a whole pattern.
(8) In order to further increase diversity, complexity, and naturalness, first and second elements are provided with the same 1 / f fluctuations applied to the generator wire length and inclination angle to form elements. It is embedded between the lattice points, presenting the possibility as a whole pattern.
(9) The generator and the element can be configured by giving depth information corresponding to the width to the strands corresponding to the trunk and branches, which can be immediately output as film information. Depending on this, even if it is the same as the conventional process, it can be used as a material for mold production. Moreover, this can be converted into CAM information and used for mold creation as an input to a machine tool. Due to recent advances in machine tool technology, the speed has been remarkably increased, which can shorten the delivery time of mold production.
(10) The surface of the printed material is decorated with a texture so as to have a three-dimensional effect according to the pattern. At that time, a mold for decorating is created in synchronization with the printed pattern, but the printing surface is made based on the original data obtained from natural materials, artificial materials, this creation wrinkle, etc. The plate is printed on a printing press. At that time, in printing, the original data becomes deformed due to the penetration of ink, the tension applied to the base paper at the time of printing, etc. In the mold production based on the original data, it is difficult to decorate with the printed pattern, and the mold production The wrinkle original data needs to be modified according to the printed pattern. Since the original data is created in the computer, the operation can be easily performed even when this deformation is applied.
(11) The textured printed material according to the present invention can be used for housing construction materials products, automobile interior parts, home appliances, exteriors of information equipment, and can also be used for miscellaneous goods such as stationery.

Claims (25)

Created by computers,
A wrinkle pattern for wrinkle pattern printing, characterized by repeating a basic structure generated by a geometric fractal and including a basic structure in which the repetition mode is changed in the repetition. The basic structure is a branch structure;
The texture pattern for texture pattern printing according to claim 1, wherein the change of the repetitive mode is due to at least one of single replacement, reverse single replacement, and double replacement combining them. .   The wrinkle pattern for wrinkle pattern printing according to claim 1 or 2, wherein a wavy shape is created by removing a dead end branch wire of the branch structure.   The texture pattern for grain pattern printing according to any one of claims 1 to 3, wherein 1 / f fluctuation property is given to a lattice point position connecting the basic structures.   5. The texture pattern printing printing according to claim 1, wherein at least one of a strand length and a strand inclination angle of the basic structure is given 1 / f fluctuation property. Wrinkle pattern.   6. The grain pattern for grain pattern printing according to any one of claims 1 to 5, wherein the grain pattern has a thickness and a depth based on the number of overlapping times of the basic structure. When creating a wrinkle pattern with a computer,
A basic structure generation process for generating a basic structure by a geometric fractal;
The basic structure repeating step of repeating the generated basic structure and including the basic structure in which the repetition mode is changed in the repetition,
A method for creating a wrinkle pattern for printing a wrinkle pattern, comprising: The basic structure is a branch structure,
8. The method for creating a texture pattern for texture pattern printing according to claim 7, wherein the change of the repetitive mode is based on at least one of single replacement, reverse single replacement, and double replacement combining them. .   The method for creating a wrinkle pattern for printing a wrinkle pattern according to claim 7 or 8, wherein the wavy shape is created by removing dead ends of the branch structure.   10. The method for creating a texture pattern for texture pattern printing according to any one of claims 7 to 9, wherein 1 / f fluctuation is imparted to the positions of lattice points connecting the basic structures.   The texture pattern for grain pattern printing according to any one of claims 7 to 10, wherein 1 / f fluctuation is imparted to at least one of the strand length and the strand inclination angle of the basic structure. Creation method.   12. The method for creating a wrinkle pattern for printing a wrinkle pattern according to any one of claims 7 to 11, wherein the thickness and depth are given based on the number of times the basic structure is superimposed.   13. For embossed pattern printing according to any one of claims 7 to 12, wherein a plurality of types of basic structures are generated and presented in the basic structure generating step, and a basic structure selected from the basic structures is used. How to create a wrinkle pattern.   14. A plurality of types of basic structures whose repetition modes have been changed in the basic structure repetition step are generated and presented, and a basic structure selected from the basic structures having their repetition modes changed is used. A method for creating a wrinkle pattern for printing a wrinkle pattern as described in any of the above.   Presenting a power spectrum picture obtained by two-dimensional Fourier transform of the wrinkle pattern created by the creation method, and based on the evaluation result of the power spectrum picture, outputting the created wrinkle pattern, The method for creating a texture pattern for texture pattern printing according to any one of claims 7 to 14.   The information entropy obtained from the texture pattern created by the creation method is presented, and the created texture pattern is output based on the evaluation result of the information entropy. A method for creating a texture pattern for printing a texture pattern. Create a texture pattern on a computer and output it.
A basic structure generation step for generating a basic structure by a geometric fractal;
A basic structure repetition step for repeating the generated basic structure and including a basic structure in which the repetition mode is changed in the repetition;
A wrinkle pattern creation program for wrinkle pattern printing. Presenting a plurality of types of basic structures generated in the basic structure generation step;
Entering a basic structure selected from those basic structures;
A wrinkle pattern creation program for wrinkle pattern printing according to claim 17, further comprising: Presenting a plurality of types of basic structures generated by the basic structure repeating step, and changing the basic structure;
Inputting a basic structure selected from the basic structures in which the repetition mode is changed;
The wrinkle pattern creation program for wrinkle pattern printing according to claim 17 or 18, further comprising: Obtaining a power spectrum picture by performing a two-dimensional Fourier transform on the texture pattern created by the creation method;
Presenting the determined power spectrum picture;
A step of inputting the evaluation result of the power spectrum picture;
Further comprising
20. The wrinkle pattern creation program for wrinkle pattern printing according to claim 17, wherein the generated wrinkle pattern is output based on the evaluation result. Obtaining information entropy from the texture pattern created by the creation method;
Presenting the determined information entropy;
Inputting an evaluation result of the information entropy;
Further comprising
21. The wrinkle pattern creation program for wrinkle pattern printing according to any one of claims 17 to 20, wherein the created wrinkle pattern is output based on the evaluation result.   7. A residential building material product, wherein the grain pattern according to any one of claims 1 to 6 is printed.   An interior part for an automobile, wherein the embossed pattern according to any one of claims 1 to 6 is printed on an exterior.   A home appliance, wherein the embossed pattern according to any one of claims 1 to 6 is printed on an exterior.   An information device, wherein the embossed pattern according to any one of claims 1 to 6 is printed on an exterior.